I decided to look, and it's a pretty deep subject: There's a lot out there, but it's difficult to sort the wheat from the chaff.

In the case of the Springfield Champion, the current factory setup is apparently a regular Rube Goldberg affair, so I'd probably look to the aftermaket.

In that case, I'd probably go with Wilson, mainly because that's all I could find. (MGW supposedly has one, but I couldn't even find their website.)

Brownells also sells the Wilson kit (it's listed right under the 5" kit, which is pictured by default).

The kit comes with a fancy flat-wire spring, which I'd also give a whirl, but I'd keep the Wolff springs in mind as a possible backup.

Unless the gun has a bull barrel, that leaves the bushing. The Wilson plug may or may not fit the stock bushing, but I am guessing it will. I'd at least give it a try before buying a new barrel bushing.

ETA: The wilson plug is for bull-barrel guns, which leaves a few options:
• Adapt as needed
• Try Kimber? (direct)
• Default (call Springfield)

HTH

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